Threaded Crimp Coaxial Connector Thermal Expansion
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Solution Overview
Problem
Existing coaxial cable connectors face challenges such as high manufacturing and installation costs, complex installation procedures, and susceptibility to interconnection quality degradation due to thermal expansion, particularly in connectors with solid outer conductors.
Innovation Solution
A coaxial connector design featuring a connector body with an outer conductor thread and jacket thread for mechanical retention, combined with a crimp operation to secure the coaxial cable, eliminating the need for manual flaring and reducing thermal expansion issues through a biased contact and insulator support for enhanced electrical and mechanical interconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If machine threaded coupling surfaces are used between the metal body and the coupling nut, then secure mechanical interconnection is achieved, but manufacturing costs and installation time requirements significantly increase
Solution Approach 1:
The connector is divided into two main sections: a threaded coupling nut for secure mechanical interconnection and a crimp connector body for simplified installation. This segmentation allows the threading function to be isolated to a removable component, reducing overall installation time while maintaining secure connection through the threaded portion.
Solution Approach 2:
The outer conductor is pre-flared at the cable end before insertion into the connector body. This preliminary flaring action prepares the outer conductor for the subsequent crimp operation, enabling faster installation by eliminating the need for on-site flaring equipment and procedures.
2Reliability
If precision cable end flaring operation is performed to retain the cable within the connector body during threading, then secure cable retention is achieved, but installation complexity and risk of damaging the flared end portion increase
Solution Approach 1:
The connector separates the cable retention function (handled by the crimped connector body) from the threading function (handled by the separate coupling nut). This allows the flared outer conductor to be securely retained during the crimp operation without requiring complex threading procedures that could damage the delicate flared portion.
Solution Approach 2:
The outer conductor is pre-flared and pre-assembled into the connector body before the final coupling nut is threaded on. This preliminary assembly secures the cable in position and protects the flared end from damage during the subsequent threading operation.
3Adaptability or versatility
If connector disassembly and sliding the back body over the cable end is required, then connector assembly can be adjusted, but installation time and complexity increase
Solution Approach 1:
The connector body and coupling nut are designed as separate, independently installable components. The connector body can be assembled onto the cable first, and then the coupling nut is threaded on separately, eliminating the need for complex disassembly and reassembly operations while maintaining adaptability for different cable configurations.
4Reliability
If additional connector elements are added to prevent damaging the flared end portion during threading, then cable protection is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The protective function for the flared outer conductor is built into the connector body structure itself through the crimp section design, rather than requiring separate protective elements. The coupling nut threads onto the already-secured assembly, providing protection without adding complex additional components.
Data Source
AI summary
A coaxial connector for coaxial cable includes a body with a bore; a sidewall of the bore provided with a cable stop projecting radially inward at least to an inner diameter of the outer conductor; an annular contact groove proximate a cable end side of the cable stop; a contact seated within the contact groove; the contact configured to bias between the contact groove and an outer diameter of the outer conductor; an outer conductor section proximate a cable end side of the contact groove with an inward projecting outer conductor thread; an inner diameter of the outer conductor section greater than the outer diameter of the outer conductor; and a transition at the cable end side of the outer conductor section to a jacket section with an inward projecting jacket thread. An inner diameter of the jacket section is greater than an outer diameter of the jacket.