Multi-Pole Rotary Connector Layout for High-Frequency Impedance Control
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Solution Overview
Problem
Existing rotary connectors face challenges in transmitting high-frequency alternating current signals and managing impedance and leakage radio waves, particularly in multi-pole configurations, leading to signal attenuation and interference.
Innovation Solution
The rotary connector design incorporates specific barrier shapes and materials to manage impedance and reduce leakage radio waves by using conductive ring portions, core wire barriers, and metal partition walls, along with strategically placed protrusions to absorb radio waves, maintaining characteristic impedance and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-pole rotary connector is used to transmit high-frequency alternating current signals, then the signal transmission capability is improved, but signal attenuation and interference increase
Solution Approach 1:
The rotary connector is divided into multiple independent pole structures, each handling specific signal paths. The connector includes multiple conductive rings and brushes arranged in separate poles, allowing high-frequency signals to be transmitted through dedicated paths while minimizing interference between channels. This segmentation enables reliable multi-channel high-frequency signal transmission.
Solution Approach 2:
Different regions of the rotary connector are optimized for specific functions: conductive rings and brushes are positioned and dimensioned to minimize contact resistance and impedance mismatches at critical interfaces. The barrier structures are strategically placed at locations where leakage radio waves are most likely to occur, providing localized interference suppression without affecting overall signal transmission.
2Ease of manufacture
If conventional rotary connector structures are used, then manufacturing simplicity is maintained, but impedance control and leakage wave management become difficult
Solution Approach 1:
The invention specifies precise dimensional parameters for conductive rings, brushes, and barrier structures to control characteristic impedance. The conductive rings have specific thickness and diameter ratios, while brushes are positioned at optimized distances from ring centers. These parameter optimizations enable impedance control without significantly complicating the manufacturing process.
Solution Approach 2:
Barrier structures serve as intermediary elements between adjacent conductive rings and signal paths. These barriers, positioned at specific locations, manage electromagnetic field distribution and suppress leakage radio waves without requiring complex manufacturing processes. The barriers act as mediators that simplify impedance control by providing predictable field confinement.
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 design effectively minimizes signal attenuation and leakage interference, enabling efficient high-frequency signal transmission across multiple channels while maintaining impedance matching.
Implementation Method 1
maintaining characteristic impedance and reducing interference
Implementation Method 2
manage impedance and reduce leakage radio waves by using conductive ring portions, core wire barriers, and metal partition walls
Data Source
AI summary
There is provided a rotary connector including: a case; and a rotor, in which the rotor has a plurality of conductive ring portions, each of which includes a core wire ring, a first GND ring, a second GND ring, a first core wire barrier, and a second core wire barrier, and a plurality of channel barriers arranged respectively between the plurality of conductive ring portions, the case has a plurality of connector portions, each of which includes a connector, a core wire brush having one end side connected to the connector and another end side in contact with the core wire ring, a first GND brush having one end side connected to the connector and another end side in contact with the first GND ring, and a second GND brush having one end side connected to the connector and another end side in contact with the second GND ring.