Coaxial Plug Connector with Compact Shielding Design
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Solution Overview
Problem
Conventional coaxial or triaxial plug connectors have a large diameter, making it difficult to lay cables through narrow conduits or boreholes, as they require enlarging the lead-through or dismounting and reassembling the connector, which can be costly and risky, especially without specialized tools.
Innovation Solution
A plug connector design with separate contact elements for the internal and shielding conductors, arranged to maintain a maximum diameter equal to or only slightly larger than the cable, allowing for a slender construction that does not necessitate enlarging the lead-through or dismounting, and featuring insulating elements for electrical isolation and interlock mechanisms for secure handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional plug connectors are designed with alternating contact surfaces and insulating sheaths to achieve continuous shielding, then shielding effectiveness is improved, but the outer diameter becomes large requiring enlarged lead-throughs
Solution Approach 1:
The connector is divided into separate contact elements for the internal conductor and shield conductors, allowing each element to be optimized independently. This segmentation enables a more compact overall diameter while maintaining the necessary shielding structure through distributed contact points rather than continuous alternating surfaces.
2Reliability
If the plug connector has a large diameter to accommodate alternating contact surfaces and insulating sheaths, then shielding continuity is maintained, but cable installation through narrow conduits becomes difficult
Solution Approach 1:
The design transitions from a radial arrangement of alternating contact surfaces and insulating sheaths to an axial arrangement where contact elements are positioned along the length of the connector. This dimensional change allows the connector to maintain shielding continuity through the axial positioning of contact elements while reducing the radial dimension to fit through narrow conduits.
3Ease of operation
If the lead-through is enlarged to accommodate the large diameter plug connector, then installation is simplified, but cost increases due to additional work
Solution Approach 1:
The critical parameter changed is the outer diameter of the connector body, which is reduced to be less than or equal to the cable outer diameter. This parameter change allows the connector to pass through existing narrow lead-throughs without modification, eliminating the need for costly enlargement work while maintaining all necessary functional properties.
4Ease of operation
If the plug connector is dismounted and reassembled after threading the cable through, then installation through narrow spaces is possible, but parts may be lost and special tools are needed
Solution Approach 1:
The connector is designed to be pre-assembled in its complete form with all contact elements and insulating components properly positioned before installation. This preliminary assembly eliminates the need for disassembly and reassembly during installation, preventing loss of parts and eliminating the need for special tools while still allowing installation through narrow conduits due to the reduced diameter.
Data Source
AI summary
An electrical plug connector for a coaxial or triaxial cable, wherein the cable includes an internal conductor, a first shielding conductor surrounding the internal conductor and extending coaxially with it, and optionally a second shielding conductor surrounding the first shielding conductor. The plug connector has a connector body, which includes an internal conductor contact element designed as a plug, socket, or coupling, for contacting with the internal conductor, an internal shield contact element provided for contacting with the first shielding conductor, and optionally an external shield contact element provided for contacting with the second shielding conductor. The connector body is configured such that the contact elements in the mounted condition of the plug connector are arranged on the cable such that a maximum diameter of the connector body is less than or equal to the outer diameter of the cable or only slightly larger than the outer diameter of the cable.