Flat Cable Connector Shell With Common Ground Noise Shielding
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Solution Overview
Problem
The existing electrical connectors with multiple adjacent cables suffer from signal interference, leading to deteriorated communication performance.
Innovation Solution
The electrical-connector-equipped flat cable design includes a shell made of metal with a frame body and a plate, where the plate is positioned between the ferrules of two flat cables and electrically connected to the frame body, effectively grounding the signal lines and reducing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple flat cables are arranged adjacent to each other in an electrical connector, then the cable density and signal transmission capacity are improved, but noise interference between signal lines increases and communication performance deteriorates
Solution Approach 1:
A ground line is inserted between adjacent signal lines from different flat cables to act as an intermediary shielding element. This ground line prevents direct electromagnetic interference between signal lines while maintaining compact cable arrangement, thus resolving the contradiction between high cable density and low noise interference
Solution Approach 2:
Adjacent signal lines are surrounded by ground lines that are maintained at the same electric potential, creating equipotential regions that shield the signal lines from each other. This equipotential shielding allows multiple cables to be arranged closely without significant noise interference, maintaining both high density and low interference
2Object-affected harmful factors
If ground lines are added between signal lines to reduce interference, then noise interference is reduced, but the structural complexity and manufacturing difficulty increase
Solution Approach 1:
Ground lines from different flat cables are merged and shared between adjacent cables, forming a common ground structure. This merging approach provides effective shielding between signal lines while avoiding the need for separate ground lines for each cable pair, thus reducing overall structural complexity
Solution Approach 2:
The ground lines serve multiple functions simultaneously: they act as shielding for adjacent signal lines, provide a common reference potential, and can be shared between multiple cable pairs. This multi-functionality reduces the total number of components needed while maintaining effective noise reduction
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 configuration ensures that the ground potential of adjacent signal lines is made common, thereby reducing noise caused by signal interference and preventing the deterioration of communication performance.
Implementation Method 1
the plate is disposed between the first ferrule and the second ferrule and electrically connected to the frame body... the coupling portion is electrically connected to each of the main body portion, the first ground line, and the second ground line
Data Source
AI summary
An electrical-connector-equipped flat cable includes a first flat cable including a first signal line and a first ground line, a first ferrule holding a first front end region, a second flat cable including a second signal line and a second ground line, a second ferrule holding a second front end region, and a shell disposed so as to surround the first ferrule and the second ferrule. The shell includes a frame body and a plate, the frame body being disposed outside the first ferrule and the second ferrule, the plate being disposed between the first ferrule and the second ferrule and electrically connected to the frame body. The plate includes a main body portion and a coupling portion electrically connected to each of the main body portion, the first ground line, and the second ground line.